Adjustment knob assembly



FIG. 1 is a top perspective view of an adjustment knob assembly;

FIG. 2 is a front view of the adjustment knob assembly;

FIG. 3 is a rear view of the adjustment knob assembly;

FIG. 4 is a right side view of the adjustment knob assembly;

FIG. 5. Is a left side view of the adjustment knob assembly;

FIG. 6 is top plan view of the adjustment knob assembly;

FIG. 7 is bottom plan view of the adjustment knob assembly; and,

FIG. 8 is a perspective view of the adjustment knob assembly shown in environmental use installed on a wheel balancer system.

The broken lines shown within the drawings illustrate features that form no part of the claimed design. 

CLAIM The ornamental design for an adjustment knob assembly, as shown and described. 